Steel industry
Implementation Guidelines for Energy Conservation and Carbon Reduction Transformation and Upgrading
The steel industry is an irreplaceable basic raw material industry for the development of China's national economy, and an indispensable and important support for building a modern strong country. The steel industry in China is mainly based on the long process production of blast furnace converter, and the primary energy consumption structure is mainly coal. There is great potential for energy-saving and carbon reduction transformation and upgrading.
According to the "Energy Efficiency Benchmark and Benchmark Levels in Key Fields of High Energy Consumption Industries (2021 Edition)", the energy efficiency benchmark level of the blast furnace process is 361 kilograms of standard coal/ton, and the benchmark level is 435 kilograms of standard coal/ton; The energy efficiency benchmark level of the converter process is -30 kg of standard coal/ton, and the benchmark level is -10 kg of standard coal/ton; The energy efficiency benchmark level for electric arc furnace smelting (30 tons<nominal capacity<50 tons) is 67 kg standard coal/ton, and the benchmark level is 86 kg standard coal/ton. The energy efficiency benchmark level for electric arc furnace smelting (nominal capacity ≥ 50 tons) is 61 kg standard coal/ton, and the benchmark level is 72 kg standard coal/ton.
As of the end of 2020, about 4% of the blast furnace production capacity in China's steel industry had better energy efficiency than the benchmark level, and about 30% had lower energy efficiency than the benchmark level; The production capacity of the converter process with energy efficiency better than the benchmark level accounts for about 6%, and the production capacity with energy efficiency lower than the benchmark level accounts for about 30%.
（一）Strengthen advanced technology research and cultivate benchmark demonstration enterprises.
Focusing on low-carbon cutting-edge technologies such as direct reduction of by-product coke oven gas or natural gas for ironmaking, high oxygen or hydrogen rich smelting in blast furnaces, melt reduction, and hydrogen smelting, we will increase the recycling and utilization of scrap steel resources, strengthen basic theoretical research on the integrity of technology sources, and carry out industrial pilot demonstrations for innovative development.
（二）Accelerate the popularization and promotion of mature processes, and orderly promote transformation and upgrading.
Green technology process.
Promote technological renovations such as internal circulation of sintering flue gas, uniform pressure gas recovery at the top of blast furnace, and dry dust removal of converter flue gas. Promote technologies such as one can of molten iron to the bottom, thin strip casting and rolling, hot charging and hot delivery of casting billets, and online heat treatment, break through and break through the interface technology of steel production processes, and promote the compactness and continuity of metallurgical processes. Increase the application and promotion efforts of flux based pellet production and blast furnace large-scale pellet smelting. Carry out green, intelligent, and efficient electric furnace short process steelmaking demonstrations, promote technologies such as efficient waste steel recycling and processing, waste heat recovery, energy-saving electric furnaces, and intelligent steelmaking. Promote the gradual transformation and upgrading of equipment such as walking beam sintering machines and pellet shaft furnaces with low energy efficiency, low clean production level, and high pollutant emission intensity to advanced process equipment, and research and promote the gradual withdrawal of independent sintering (pellet) and independent hot rolling.
Cascade comprehensive utilization of waste heat and energy.
Further increase the recovery and utilization of residual heat and energy, with a focus on promoting the recovery of low-grade waste heat such as low-temperature flue gas, slag flushing water, and circulating cooling water. Promote advanced technologies such as electric furnace flue gas waste heat, high parameter power generation unit improvement, low-temperature waste heat organic Rankine cycle (ORC) power generation, and low-temperature waste heat multi supply. Through cascade comprehensive utilization, achieve maximum recovery and utilization of waste heat and energy resources. Increase technological innovation, encourage and support the development and application of technology and equipment for efficient recovery and comprehensive utilization of medium and high temperature flue gas waste heat and metallurgical slag waste heat under complex conditions such as electric furnaces and converters.
Energy system optimization.
Research and apply digital and intelligent control measures such as heating furnaces, baking ladle, and transportation of molten steel and billets in the factory, to promote the collaborative optimization of large material flow and large energy flow in the steel production process. Fully popularize the application of energy control centers, strengthen the management of energy equipment, strengthen the equipment and use of energy measuring instruments, and promote the digital and intelligent transformation of enterprise energy management. Promote the research and application of technologies such as optimization of various energy medium systems, multi flow coupled micro distributed energy systems, and regional energy utilization self balancing.
Intelligent energy efficiency management.
Further promote the innovative application of new generation information technologies such as 5G, big data, artificial intelligence, cloud computing, and the Internet in energy management, encourage research and development of energy efficiency mechanisms and data-driven models, establish three-level energy efficiency diagnosis systems for equipment, systems, and factories, and achieve intelligent control of core energy equipment through dynamic and visible fine control, intelligent coupling of production processes for energy conservation and carbon reduction, and global intelligent scheduling optimization and control Collaborative control of energy and environmental protection, promoting the digital, networked, and intelligent development of energy management, and improving the overall energy efficiency level.
Renovation of general public and auxiliary facilities.
Promote the application of efficient and energy-saving motor, water pump, and fan products, and increase the proportion of usage. Reasonably configure the motor power to achieve system power saving. Improve the level of mechanization and automation in enterprises. Carry out research and application of advanced technologies such as compressed air centralized group control intelligent energy-saving, hydraulic system servo control energy-saving, and potential energy recovery. Encourage enterprises to fully utilize high-quality rooftop resources in large areas, invest in and construct distributed photovoltaic power generation projects through self construction or leasing, and increase the proportion of green electricity usage by enterprises.
Low carbon transformation of circular economy.
Focus on promoting the production and application of steel slag powder and the comprehensive utilization of iron and zinc containing dust and mud, to improve the level of resource utilization. Encourage the research and application of steel slag micro powder and steel slag composite powder technologies, improve the replacement rate of cement clinker, increase the research and application efforts of steel slag particle permeable high-strength asphalt pavement technology and steel slag carbon fixation technology, and improve the circular economic value of steel slag. Promote the joint production of steelmaking and gasification, relying on the abundant hydrogen and carbon monoxide resources in the by-product gas of steel enterprises, to produce high value-added chemical products. Carry out demonstration applications of industrial furnace flue gas recovery and utilization of carbon dioxide technology, and promote industrial application.
By 2025, the proportion of production capacity above the energy efficiency benchmark level in the ironmaking and steelmaking processes of the steel industry will reach 30%, and production capacity below the energy efficiency benchmark level will be basically cleared. The industry's energy-saving and carbon reduction effect is significant, and its green and low-carbon development capacity will be significantly improved.
Notice of Four Departments on Issuing the Implementation Guidelines for Energy Conservation and Carbon Reduction Transformation and Upgrading in Key Fields of High Energy Consumption Industries (2022 Edition)Development and Reform Industry [2022] No. 200All provinces, autonomous regions, municipalities directly under the central government, and cities specifically designated in the state plan, as well as the Development and Reform Commission of the Xinjiang Production and Construction Corps, the competent departments of industry and information technology, the departments (bureaus) of ecological environment, and the energy bureaus: in accordance with the relevant deployments of the "Several Opinions on Strict Energy Efficiency Constraints to Promote Energy Conservation and Carbon Reduction in Key Fields" and the "Notice on Issuing the" Energy Efficiency Benchmark and Benchmark Levels in Key Fields of High Energy Consumption Industries (2021 Edition) ", In order to promote various relevant parties to scientifically carry out energy-saving and carbon reduction transformation and upgrading in key areas, the "Implementation Guidelines for Energy Conservation and Carbon Reduction Transformation and Upgrading in Key Fields of High Energy Consumption Industries (2022 Edition)" is hereby issued, and relevant matters are notified as follows.
一、Guiding transformation and upgrading
For enterprises with energy efficiency at the benchmark level, especially below the benchmark level, actively promote the advanced technology and equipment proposed in this implementation guide, green technology promotion catalog, industrial energy-saving technology recommendation catalog, and the "Energy Efficiency Star" equipment product catalog, strengthen energy system optimization, residual heat and pressure utilization, pollutant reduction, comprehensive utilization of solid waste, and renovation of public and auxiliary facilities, and improve the green level of production processes and technical equipment, Improve the efficiency of resource and energy utilization, and promote the formation of a strong domestic market.
二、Strengthen technical research
Fully utilize the innovative resources of higher education institutions, research institutes, industry associations, and other units to promote the research of green common key technologies, cutting-edge leading technologies, and related facilities and equipment for energy conservation, pollution reduction, carbon reduction, and synergy. Promote backbone enterprises with energy efficiency reaching or approaching benchmark levels, adopt advanced cutting-edge technology and equipment to plan and construct demonstration projects, and lead the high-quality development of the industry.
三、Promoting agglomeration development
Guide backbone enterprises to leverage their advantages in capital, talent, and technology, voluntarily carry out mergers and acquisitions in this field through methods such as selecting the best and replacing the worst, and capacity replacement. Concentrate on planning and constructing large-scale and integrated production bases, improve the level of process equipment and energy utilization efficiency, and build a development pattern with a reasonable structure, effective competition, and standardized order. It is not allowed to blindly expand production capacity and repeat low-level construction under the pretext of mergers and acquisitions.
四、Accelerate the elimination of lagging behind
Strictly implement relevant laws and regulations on energy conservation, environmental protection, quality, safety technology, and policies such as the "Catalogue for Guiding Industrial Structure Adjustment", and eliminate outdated process technologies and production devices that do not meet the requirements of green and low-carbon transformation and development in accordance with the law and regulations. For production capacity whose energy efficiency is below the benchmark level and it is difficult to achieve above the benchmark level through transformation and upgrading within the specified time limit, we will promote its accelerated exit through market-oriented and legal means.
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